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  <title>Document</title>
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<body>
  <script>
    // let arr =['张三','李四','王五','孙六'];
    function reverseArr(arr) {
      let newArr = [];
      for (let i = arr.length - 1; i >= 0; i--) {
        newArr[newArr.length] =arr[i];
      }
      return newArr
    }
    let arr=['张三','李四','王五','孙六'];
    console.log(reverseArr(arr));
  </script>
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